Paper-making machine



N. J. NiKS.

PAPER MAKING MACHINE.

APPLICATION FILED SEPT. a. .1918.

m. WM

d H C P In 9W. w W

N. J. NIKS.

PAPER MAKING MACHINE.

APPLICATION men SEPT. 3. 191a.

Patented Jan. 6, 1920.

2 SHEETS-SHEET 2.

I lvwwwlioa Thorium J. lims following specification.

NICKOLAE? If. EIKS, 0F KALAZQO, MICHIGAN.

lAPEZfi-IKAKING MACHINE.

menses.

Specification of Letters Patent.

Application filed September 3, 1918. Serial No. 252,293.

To all whom it may concern:

Be it known that I, NIoKoLAs J NIKS, a citizen of the United States,residing at the city and county of Kalamazoo and State of Michigan, haveinvented certain new and useful Improvements in Paper-Making Machines,of which the following is a specification.

This invention relates'to improvements in paper making machines.

The main objects of this invention are:

First, to provide an improved paper making machine well adapted for thehandling of tissue and other thin papers.

Second, to pr'ov do an improved paper making machine in which the paperis carried from a couch roll to the drier on a continuous felt. 7

Third, to provide an improved paper making machine in which the pressfelt, and the press roll take off felt, which I provide, are washedduring the operation of the machine.

Fourth, to provide an improved paper making machine in which there islittle likej lihood of breakage in the web and consequent loss of timeand material even when manu. faoturing very thin paper.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the The invention is clearly defined and pointed out in theclaims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisspecification, inwhich:

Figure I is a diagrammatic and conventional illustration of parts of apaper making machine of the Harper-Fourdrinier type embodying thefeatures of my inven tion.

Fig. 11 is a diagrammatic and conventional illustration of a papermaking machine of the cylinder type embodying thefeatures of myinvention.

In the drawing similar reference characters refer to similar parts inboth views.

In the drawing, 1 represents the head boX of a paper making machine fromwhich the pulp flows to the making wire '2 supported by the breast roll3 at one end and couch roll 4 at the other. deckle straps for regulatingthe width of the 5 represents the web. Other parts of the paper makingmachine proper are not illustrated as such features form no part of myinvention and machines of the Harper-Fourdrinier type are well known inthe art.

6 represents the web, which is transferred from the making wire to pressfelt 7 supported at its front end by the couch roll 8. This press feltextends to and delivers the web to the first cylinder 9 of the drier.The press felt is supported-and uided by suitable rolls. I referspecifically only to such of these as are of importance onaccount oftheir coacting relations to other parts.

The press rolls 10 and 11 are located between the couch roll 8 and firstdrying cylinder 9 and the forward reach of the press felt passes betweenthem, being supported over the upper press roll 10 by roll 12 andcarried reversely. therethrough over the uide roll 13. A guide roll 14is disposed slow the lower press roll. From the guide roll 14 the feltpasses over the roll 15 which is positioned above the first dryingcylinder.

From thence it passes over the roll 16 which is supported sothat thefelt is held in contact with the drying cylinder as it passes over thisroller, the roller constituting a smoothing roll for the web.

I pass the return reach of the felt through a washing tank 17 and thewringer rolls 18. The felt is passed through the tank in a series ofloops and sprays l9 deliver there against as the felt leaves the tankand passes to the wringer or squeeze rollers.

I provide a second or take off felt 20 which is supported on suitable'uide rolls to pass between the press rolls with the press felt. Thefelt 20 is provided with a suitable tensioning device as 21. One of itsguide rglls 22 is positioned so that this. second felt engages the webas it passes over the press felt guide roll 13. The felt 20 is passedover the roll 14 so that the Web is held to the press felt as it passesfrom the press rolls. On its return reach the felt 20 is carried througha second washing tank 17, the tank illustrated being a duplicate of thatde scribed for the press felt. The press roll 10 is preferably a suctionroll.

In the embodiment shown in Fig. II, 23 represents the pulp tank and 24the making cylinder from which the web is delivered to the press felt 7,the remaining parts being arranged substantially as has been described.

Patented an. 6, 1920.

that it makes it practical to use inferiorpress felts than hasheretofore been used,

thereby giving longer life to the felt. The

. arrangement further permits the continuous washing of the felts andthe use of a suction roll as one of the press rolls.

While my improvements are particularly desirable for use in themanufacture of tis sue and light papers they are also desirable for usein the manufacture of heavier papers. I have shown my improvementsmerely 1n diagrammatic or conventional form as I believe the same w1llbe readily understoodand embodied, from such illustrations, by thoseskilled in the art to which my invention relates as the particularmachine to which it is adapted and its surroundings may require.

Having .thus described my invention, What I claim as new and desire tosecure by Letters Patent, is:

1. In a paper making machine, the combination with a couch roll, pressrolls and a drying cylinder, of a press felt extending 'from said couchroll to said drying cylinder to discharge the web thereto with itsforward reach passing between said press rolls,

one of said rollers being a suction roll, there being a pair of guidingand supporting rolls for said press felt positioned adjacent said pressrolls and so that the press felt is carried over and reversely betweensaid press rolls, a air of rolls positioned adjacent said dryingcylinder supporting said press felt in contact with a substantial arcthereof, the second of such rolls constituting a smoothing roll and beinpositioned so that the press felt is held to t e drying cylinderas itpassesover the roll and a second felt guided to pass between said pressrolls and over the said guiding and supporting roll at the rear thereof,said second felt be ing: supported and guided to engage the under sideof a web on the press felt before it reaches the press rolls, and toleave the same carried-on the upper side of the press felt before itreaches the drying cylinder.

2. In a paper making machine, the combination with a couch roll, pressrolls, and a drying cylinder, of a press felt extending from said couchroll to and into contact with said drying cylinder to discharge the webthereto with its forward reach passing between said press rolls, one ofsaid rollers being a suction roll, there being a pair of uiding andsupporting rolls for said press felt positioned adjacent said pressrolls and so that the press felt is carried over and reversely betweensaid press rolls with the web on the under side thereof, and a secondfelt guided to and passing between said press rolls, and over the saidguiding and supporting roll at the rear thereof,'in engagement with theunder side of the web.

8. In a paper making machine, the combination with a couch roll, pressrolls,,and a drying cylinder, of a press felt extending from said couchroll to said drying cylinder and into contact therewith to deliver theweb thereto with its forward reach being guided to and passing'betweensaid press rolls, with, the web on the under side thereof, a pair ofrolls positioned adjacent said drying cylinder supporting said pressfelt in contact with a substantial arc thereof, the. second of suchrolls constituting a smooth ing roll and being positioned so that thepress felt is held to'the drying cylinder as it passes over theiroll, asecond felt guided to and passing between said press rolls to engage theunder side of the web and hold it to said press felt after it leaves thepress rolls, and washing means for said felts disposed so that the feltsare washed on their return reaches.

ll In a paper making machine, the combination with a couch roll, pressrolls, and a drying cylinder, of a press felt extending from said couchroll to said drying cylinder and into contact therewith to deliver theweb thereto with its forward reach guided to and passing between saidpress rolls, with the web on the under side thereof, a second feltguided to and passing between said press rolls to engage-the under sideof web and hold it to said press felt after it leaves the press rolls,and washing means for said felts disposed so that the felts are washedon their returnreaches.

5. In a paper making machine, the combination with press rolls, and adrying cylinder, of a press felt with its forward reach guidedto passbetween said press rolls, with the web on the under side thereof, saidfelt being reversed at the rear of said press rolls to bring the Web tothe top side thereof, and extending to and held into contact with saiddrying cylinder to deliver the web thereto, a pair of rolls positionedadjacent said dry ing cylinder supporting said press felt in contactwith a substantial arc thereof, the second of such rolls constituting asmoothing roll and being positioned so that the press felt is held tothe drying cylinder as it passes over the roll, and a second feltengaging the under side of the web, passing be-V tween said press rollsto hold the Web to said press felt after it leaves the press rolls.

6. In a paper making machine, the combination with press rolls, and adrying cylinder, of a press felt with its forward reachgees guided andsupported to engage the under side of the Web to said press felt afterit leaves the press rolls.

In Witness whereof I have hereunto set my 15 hand and seal in. thepresence of two Wit nesses.

NICKOLAS J1 NTLKS.

Witnesses:

MARTHA JVGREGORYS GRACE B. THOMPSON.

